|
| US4824314 | 28 Ene 1987 | 25 Abr 1989 | Northrop Corporation | Composite fastener system and manufacturing method thereof |
| US5700120 | 1 Ago 1996 | 23 Dic 1997 | General Electric Co. | Threaded fastener and method of improving the fatigue life thereof |
| US6086305 | 13 Ene 1999 | 11 Jul 2000 | Illinois Tool Works Inc. | Nails having selected heat treatment and hardening |
| US6109851 | 13 Ene 1999 | 29 Ago 2000 | Illinois Tool Works Inc. | Screws having selected heat treatment and hardening |
| US6273974 | 15 May 2000 | 14 Ago 2001 | Illinois Tool Works Inc. | Selected heat treatment and hardening method for nails |
| US6364972 | 15 May 2000 | 2 Abr 2002 | Illinois Tool Works Inc. | Method for selectively hardening a carbon steel screw |
| US6436474 | 21 Jun 2001 | 20 Ago 2002 | Illinois Tool Works Inc. | Method of chemically coating fasteners having improved penetration and withdrawal resistance |
| US7891925 | 18 Jun 2009 | 22 Feb 2011 | Blount, Inc. | Shear resistant rivet and saw chain |